Monday, April 28, 2014

Roof Framing Geometry Proposition – Axioms #2

Using my Roof Framing Geometry Proposition – Axioms, it's like taking candy from a baby for laying out the geometry that defines the upper and lower claw angles on purlin rafters and jack rafters that tie into rotated hip rafters. Like Joe said,
The Mazerolle Code has been broken.

Purlin Rafter unfolded. You need 6 angles  and 2 dimensions to layout the unfolded template for the purlin rafter. 

Jack Rafter Unfolded.You need 3 angles  and 1 dimension to layout the unfolded template for the jack rafter.  The roof surface angles was obtained from the drawdown method of the roof surface.

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